1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
function Invoke-ReverseDnsLookup
{
<#
.Synopsis
PowerSploit Module - Invoke-ReverseDnsLookup
Author: Matthew Graeber (@mattifestation)
License: BSD 3-Clause
.Description
Invoke-ReverseDnsLookup scans an IP address range for DNS PTR records. This script
is useful for performing DNS reconnaisance prior to conducting an authorized
penetration test.
.Parameter IPRange
Specifies the IP address range. The range provided can be in the form of a single
IP address, a low-high range, or a CIDR range. Comma-delimited ranges may can be
provided.
.Example
PS> Invoke-ReverseDnsLookup 74.125.228.0/29
IP HostName
-- --------
74.125.228.1 iad23s05-in-f1.1e100.net
74.125.228.2 iad23s05-in-f2.1e100.net
74.125.228.3 iad23s05-in-f3.1e100.net
74.125.228.4 iad23s05-in-f4.1e100.net
74.125.228.5 iad23s05-in-f5.1e100.net
74.125.228.6 iad23s05-in-f6.1e100.net
Description
-----------
Returns the hostnames of the IP addresses specified by the CIDR range.
.Example
PS> Invoke-ReverseDnsLookup '74.125.228.1,74.125.228.4-74.125.228.6'
IP HostName
-- --------
74.125.228.1 iad23s05-in-f1.1e100.net
74.125.228.4 iad23s05-in-f4.1e100.net
74.125.228.5 iad23s05-in-f5.1e100.net
74.125.228.6 iad23s05-in-f6.1e100.net
Description
-----------
Returns the hostnames of the IP addresses specified by the IP range specified.
.Link
My blog: http://www.exploit-monday.com
#>
Param( [Parameter(Position = 0, Mandatory = $True)] [String] $IpRange )
function Parse-IPList ([String] $IpRange)
{
function IPtoInt
{
Param([String] $IpString)
$Hexstr = ""
$Octets = $IpString.Split(".")
foreach ($Octet in $Octets) {
$Hexstr += "{0:X2}" -f [Int] $Octet
}
return [Convert]::ToInt64($Hexstr, 16)
}
function InttoIP
{
Param([Int64] $IpInt)
$Hexstr = $IpInt.ToString("X8")
$IpStr = ""
for ($i=0; $i -lt 8; $i += 2) {
$IpStr += [Convert]::ToInt64($Hexstr.SubString($i,2), 16)
$IpStr += '.'
}
return $IpStr.TrimEnd('.')
}
$Ip = [System.Net.IPAddress]::Parse("127.0.0.1")
foreach ($Str in $IpRange.Split(","))
{
$Item = $Str.Trim()
$Result = ""
$IpRegex = "\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}"
# First, validate the input
switch -regex ($Item)
{
"^$IpRegex/\d{1,2}$"
{
$Result = "cidrRange"
break
}
"^$IpRegex-$IpRegex$"
{
$Result = "range"
break
}
"^$IpRegex$"
{
$Result = "single"
break
}
default
{
Write-Warning "Inproper input"
return
}
}
#Now, start processing the IP addresses
switch ($Result)
{
"cidrRange"
{
$CidrRange = $Item.Split("/")
$Network = $CidrRange[0]
$Mask = $CidrRange[1]
if (!([System.Net.IPAddress]::TryParse($Network, [ref] $Ip))) { Write-Warning "Invalid IP address supplied!"; return}
if (($Mask -lt 0) -or ($Mask -gt 30)) { Write-Warning "Invalid network mask! Acceptable values are 0-30"; return}
$BinaryIP = [Convert]::ToString((IPtoInt $Network),2).PadLeft(32,'0')
#Generate lower limit (Excluding network address)
$Lower = $BinaryIP.Substring(0, $Mask) + "0" * ((32-$Mask)-1) + "1"
#Generate upperr limit (Excluding broadcast address)
$Upper = $BinaryIP.Substring(0, $Mask) + "1" * ((32-$Mask)-1) + "0"
$LowerInt = [Convert]::ToInt64($Lower, 2)
$UpperInt = [Convert]::ToInt64($Upper, 2)
for ($i = $LowerInt; $i -le $UpperInt; $i++) { InttoIP $i }
}
"range"
{
$Range = $item.Split("-")
if ([System.Net.IPAddress]::TryParse($Range[0],[ref]$Ip)) { $Temp1 = $Ip }
else { Write-Warning "Invalid IP address supplied!"; return }
if ([System.Net.IPAddress]::TryParse($Range[1],[ref]$Ip)) { $Temp2 = $Ip }
else { Write-Warning "Invalid IP address supplied!"; return }
$Left = (IPtoInt $Temp1.ToString())
$Right = (IPtoInt $Temp2.ToString())
if ($Right -gt $Left) {
for ($i = $Left; $i -le $Right; $i++) { InttoIP $i }
}
else { Write-Warning "Invalid IP range. The right portion must be greater than the left portion."; return}
break
}
"single"
{
if ([System.Net.IPAddress]::TryParse($Item,[ref]$Ip)) { $Ip.IPAddressToString }
else { Write-Warning "Invalid IP address supplied!"; return }
break
}
default
{
Write-Warning "An error occured."
return
}
}
}
}
Parse-IPList $IpRange | ForEach-Object {
try {
$Temp = [System.Net.Dns]::GetHostEntry($_)
$Result = @{
IP = $_
HostName = $Temp.HostName
}
New-Object PSObject -Property $Result
} catch [System.Net.Sockets.SocketException] {}
}
}
|